You can use your login credentials from any location and setup on as many computers as you wish, however you are limited to the following:

Proxy Users

Each proxy account is limited to a maximum of 50 connections at any one time. Some websites use multiple connections in order to display correctly. Also if you have added the Proxy to Internet Explorer you PC will be using the proxy for things like Outlook, Skype, etc.

If you are receive an error saying "Access Denied" please try closing some applications or limit your browsing to one or two websites at a time.

VPN Users

You can connect to the VPN from a maximum of 8 devices at one time. The benefit to a VPN is there is no limit on the number of connections used by websites or applications. Simply the physical number of computers connected at one time.

If you would like to switch between Proxy and VPN to see which suites your needs best you can login to your account at https://libertyshield.com where you can switch your account between Proxy & VPN.